I saw the hinges a few weeks ago when EMS was at the Goodguys and am planing to use a set of the '55's in my build (I know it's not a '57). I've seen them on 55's and 56's, not on the 57. They are located in Rancho Cucamonga which should be close enough for you to to drive there and talk with them. They might have someone available with a set installed. Try giving them a call at 888-813-1293. If you like them, it is always worth asking for a local boy discount.